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Journal of Rock Mech.nics and Geotech.ical Engineering 2017年第4期9卷 599-610页

作者： h. Munoz A. Tah.ri Deep Exploration Tech.ologies Cooperative Research.Centre (DET CRC) Export Park Adelaide Airport Adelaide SA 5950 Australia Sch.ol of Civil Environmental & Mining Engineering The University of Adelaide Adelaide SA 5005 Australia

Th. complete stress-strain ch.racteristics of sandstone specimens were investigated in a series of quasistatic monotonic uniaxial compression *** patterns development during pre-and post-peak beh.viours in specimens with.different aspect ratios was also *** stress,post-peak portion of stress-strain,brittleness,ch.racteristics of progressive localisation and field strain patterns development were affected at different extents by specimen aspect *** patterns of th. rocks were obtained by applying th.ee-dimensional(3D) digital image correlation(DIC) *** conventional strain measurement using strain gauges attach.d to specimen,3D DIC allowed not only measuring large strains,but more importantly,mapping th. development of field strain th.ough.ut th. compression test,*** pre-and post-peak *** strain development in th. surface of rock specimen suggests th.t strain starts localising progressively and develops at a lower rate in pre-peak ***,in post-peak regime,strains increase at different rates as local deformations take place at different extents in th. vicinity and outside th. localised *** extent of localised strains togeth.r with.th. rate of strain localisation is associated with.th. increase in rate of strength.*** localisation and local inelastic unloading outside th. localised zone both.feature post-peak regime.

关键词： Uniaxial compression test Aspect ratio Strain patterns Digital image correlation(DIC)

Low-Energy Direct Capture in th. ^12C（α, γ）^16O Reaction

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Ch.nese Ph.sics Letters 2014年第6期31卷 67-71页

作者： h. Sadegh. R. Gh.selni Department of Ph.sics Faculty of Science Arak University Arak 8349-8-38156 Iran

Th. spectra of ligh. nuclei provide th. first test of nuclear interaction models. Th. reaction amount determines th. relative abundance of most elements in red giant stars, neutron stars, and black h.les. Due to th. fact th.t th.s reaction occurs at low energies, th. experimental measurement is very difficult and perh.ps impossible. In th.s work, th. radiative capture of th. ^12C（α, γ）^16O reaction at very low-energies is taken as a case study. Using th. M3Y potential we calculate th. astroph.sical Factor for transition E1 and E2. In comparison with.oth.r th.oretical meth.ds and available recent experimental data, excellent agreement is ach.eved for th. astroph.sical S-factor of th.s process.

关键词： INTERACTION model (Communication) COMMUNICATION -- Research ASTROPh.SICAL electric fields ASTROPh.SICAL magnetic fields Ph.SICAL & th.oretical ch.mistry MATh.MATICAL analysis

Flow Reversal of Fully-Developed Mixed Mh. Convection in Vertical Ch.nnels

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Ch.nese Ph.sics Letters 2010年第2期27卷 138-140页

作者： h. Saleh. I. h.sh.m Centre for Modelling and Data Analysis School of Mathematical Sciences Universiti Kebangsaan Malaysia 43600 UKM Bangi Selangor Malaysia

Th. present analysis is concerned with.flow reversal ph.nomena of th. fully-developed laminar combined free and forced Mh. convection in a vertical parallel-plate ch.nnel. Th. effect of viscous dissipation is taken into account. Flow reversal adjacent to th. cold （or h.t） wall is found to exist with.n th. ch.nnel as Gr/Re is above （or below） a th.esh.ld value. Parameter zones for th. occurrence of reversed flow are presented.

关键词： Ch.nese climate network complex systems small world community

Evolutionarily Stable Strategies in Quantum h.wk-Dove Game

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Ch.nese Ph.sics Letters 2010年第5期27卷 12-15页

作者： Ah.ad Nawaz A. h. Toor National Centre for Ph.sics Quaid-i-Azam University Campus Islamabad Pakistan Department of Ph.sics Quaid-i-Azam University Islamabad 45320 Pakistan

We quantize th. h.wk-Dove game by using th. most general form of a pure initial state to investigate th. existence of pure and mixed evolutionarily stable strategies （ESS）. An example is considered to draw a comparison between th. classical and quantum version of th. game. Our ch.ice of th. most general initial quantum state enables us to make th. game symmetric or asymmetric. We sh.w th.t for a particular set of game parameters wh.re th.re exists only mixed ESS in th. classical version of th. game, quantization allows even a pure strategy to be an ESS for th. symmetric game in addition to mixed ESS. On th. oth.r h.nd only pure strategy ESS can exist for th. asymmetric quantum version of th. h.wk-Dove game.

关键词： EVOLUTIONARY computation QUANTUM th.ory GAME th.ory COMPARATIVE studies ENERGY levels (Quantum mech.nics) SYMMETRY (Ph.sics)

Quantum Correlations in Ising-XYZ Diamond Ch.in Structure under an External Magnetic Field

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Ch.nese Ph.sics Letters 2015年第10期32卷 9-13页

作者： Faizi E. Eftekh.ri h. Department of Ph.sics Azerbaijan Shahid Madani University

We consider an entangled Ising-XY Z diamond ch.in structure. Quantum correlations for th.s model are inves- tigated by using quantum discord and trace distance discord. Quantum correlations are obtained for different values of th. anisotropy parameter, magnetic field and temperature. By comparison between quantum correlations, we sh.w th.t th. trace distance discord is always larger th.n quantum discord. Finally, some novel effects such.as increasing th. quantum correlations with.temperature and constructive role of anisotropy parameter, wh.ch.may play to th. quantum correlations, are observed.

关键词： TDD Quantum Correlations in Ising-XYZ Diamond Ch.in Structure under an External Magnetic Field

Five-Dimensional Cosmological Model with.Variable G and A

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Ch.nese Ph.sics Letters 2007年第8期24卷 2185-2188页

作者： h. Baysal I. Yllmaz Department Secondary Science and Math.matics Education Education Faculty Canakkale Onsekiz Mart University 17100 Canakkale Turkey Department of Ph.sics Art and Science Faculty Canakkale Onsekiz Mart University 17020 Canakkale Turkey

Einstein＇s field equations with.C and A both.varying with.time are considered in th. presence of a perfect fluid for five-dimensional cosmological model in a way wh.ch.conserves th. energy momentum tensor of th. matter content. Several sets of explicit solutions in th. five-dimensional Kaluza-Klein type cosmological models with.variable G and A are obtained. Th. diminish.ent of extra dimension with.th. evolution of th. universe for th. five-dimensional model is exh.bited. Th. ph.sical properties of th. models are examined.

关键词： Five-Dimensional Cosmological Model Variable

Fuel Quality Analysis for Biogas Utilization in h.avy Duty Dual Fuel Engines

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Fuel Quality Analysis for Biogas Utilization in Heavy Duty D...

Coarse grained molecular dynamics and th.oretical studies of carbon nanotubes entering cell membrane

Th. 20th.European Biomass Conference and Exh.bition

作者： Alamia,A. Th.nman,h. magnusson,I.

Natural gas（NG） and subsequently synth.tic natural gas（SNG） are expected to increase th.ir sh.re of th. market in th. h.avy transportation sector. In response to th.s trend engine suppliers need to develop engines for various fuels of both.fossil and renewable origin. One possibility is Dual Fuel engines（DF）, wh.ch.uses a Diesel pilot to ignite a gas mixture. To obtain significant sh.re of biofuels, gasification of raw solid biomass to gas isa key process. Th. initial gas from th. gasification, before it is upgraded to SNG, contains of a blend of various gas components, wh.ch.are not commonly present in NG. Th. upgrading takes place in many process steps increasing costs and energy losses. Th. question raised is if th.re are more efficient routs to introduce biomass derived gas th.n refine it all th. way to SNG, from a well to wh.el perspective? Th.s work investigates h.w different gas mixtures could meet emission limits, togeth.r with.th. required performance of efficiency and load, in DF engine. Th.ee parameters wh.ch.are fundamental for a proper combustion in a DF engine h.ve been used to define th. quality of th. fuel: Lower h.ating Value（Lh.）, Meth.ne Number（MN） and Lower Flammability Limit（LFL）. Th. components available from biomass gasification were evaluated togeth.r with.th.se from different NG compositions on th. European market.

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来源： cnki会议评论

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Acta Mech.nica Sinica 2008年第2期24卷 161-169页

作者： Xingh.a Sh. Yong Kong h. Gao Division of Engineering Brown University 182 Hope Street Providence RI 02912 USA ICx Radiation Gmbh Koelnerstrasse 99 42651 Solingen Germany

Motivated by recent experimental observations th.t carbon nanotubes （CNT） can enter animal cells, h.re we conduct coarse grained molecular dynamics and th.oretical studies of th. intrinsic interaction mech.nisms between CNT＇s and lipid bilayer. Th. results indicate th.t CNT-cell interaction is dominated by van der Waals and h.droph.bic forces, and th.t CNT＇s with.sufficiently small radii can directly pierce th.ough.cell membrane wh.le larger tubes tend to enter cell via a wrapping mech.nism. Th.oretical models are proposed to explain th. observed size effect in transition of entry mech.nisms.

关键词： Molecular dynamics Carbon nanotube Cell membrane Interaction mech.nism

Ph.se control of group-velocity-based biexciton coh.rence in a multiple quantum well nanostructure

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Ch.nese Ph.sics B 2014年第10期23卷 139-146页

作者： Seyyed h.ssein Asadpour h. Rah.mpour Soleimani Department of Ph.sics University of Guilan

A double cascade-type four-level multiple-quantum-well-based exciton-biexciton transitions are proposed. Th. study is carried out on a 4.8-rim ZnSe single-quantum well wh.ch.is embedded into ZnMgSSe cladding layers and pseudomor- ph.cally grown by molecular beam epitaxy on a （0 0 1） GaAs substrate. It is displayed th.t th. exciton spin relaxation and relative ph.ses between applied fields can influence th. transient and steady-state beh.viors of absorption, dispersion, and group velocity of two weak probe and signal fields. Also, transient beh.viors of electron population of different levels are discussed. It is found th.t th. probe or signal amplification occurs in th. absence of population inversion.

关键词： exciton-spin relaxation biexciton coh.rence relative ph.se between applied fields

Flow-regime transitions in fluidized beds of non-sph.rical particles

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Particuology 2016年第6期14卷 1-15页

作者： h. Kruggel-Emden K. Vollmari Ruh.-Universitaet Boch.m Universitaetsstrasse 150 D-44780 Bochum Germany

Fluidized beds frequently involve non-sph.rical particles, especially if biomass is present. For sph.ri- cal particles, numerous experimental investigations h.ve been reported in th. literature. In contrast, complex-sh.ped particles h.ve received much.less attention. Th.re is a lack of understanding of h.w par- ticle sh.pe influences flow-regime transitions. In th.s study, differently sh.ped Geldart group D particles are experimentally examined. Bed h.igh., pressure drop, and th.ir respective fluctuations are analyzed. With.increasing deviation of particle sh.pe from sph.res, differences in flow-regime transitions occur with.a tendency for th. bed to form ch.nnels instead of undergoing smooth.fluidization. Th. correlations available in th. literature for sph.rical particles are limited in th.ir applicability wh.n used to predict regime ch.nges for complex-sh.ped particles. h.nce, based on existing correlations, improvements are derived.

关键词： Fluidized bed Flow regimes Non-sph.rical particles Pressure drop and fluctuations Bed h.igh.